One of the four fundamental forces in the universe is Magnetism . It is everywhere and in anything that has a movement of charged particles. For example, telephones, stereos, and televisions. What would society do without magnets? Not talk on the phone, listen to music, or watch TV! The charged particles are a result of electricity and even produce electricity. This is how Electricity and Magnetism are similar.[1] Magnetism is defined as the attraction or repulsion of a ferromagnetic materials and a magnet. Ferromagnetic materials are Iron, Nickel, Cobalt, and alloys containing them. When a magnet comes in contact with a ferromagnetic material, the atoms become lined up. This results in a magnetic force between the ferromagnetic material and the magnet. This is all possible thanks to the magnetic field created by the movement of electrically charged particles.
Like it? Create your own at GoAnimate.com. It's free and fun!
Did you know a magnet is strongest at it’s north and south poles? Magnets have two poles. These poles decide whether the ferromagnetic material is going to repel or attract. The attraction of two magnets will happen if the poles are opposite. For example, if the magnets are positive to positive they will repel; if they are negative to positive they attract and stick together.[2]
There are different types of magnets. They include:
Ceramic magnets (also known as ferric magnets
Used in refrigerator magnets
Strength: weak
Alnico magnets
Used in electric motors & microphones
Strength: stronger than Ceramic
Samarium Cobalt magnets
Used in guitars
Strength: Strong, permanent
Lodestone magnets (occur naturally)
Used to magnetize iron for compasses in the 12th century
Strength: Strong
Magnets have domains, or a tiny inner magnet with poles that orient north and south. If the domain does not have any specific direction, there it is an unmagnetized ferromagnetic material. These domains can rotate enabling the alignment of the north and south poles. They can also grow! The domain can grow to a larger size if they domain that surrounds it decreases in size! The borders around the domains move to fit the domain at all times, in some cases where the domain is extensively strong the walls no longer exist; the force used to move the domain walls are the strength of the magnet.[3]
Not only are there many types of magnets, there are many ways to use them as well! In many cases animals such as birds and sea turtles use the Earth’s magnetic field to navigate home, or away from home depending on the season. Some scientist say the mineral called Magnetite is used in the animals brains and help them find and use the magnetic field without problems. [4][5]
Lines of flux are present in magnetic fields. The lines flow from one end of the object to another creating the North and South poles; similar to Earth's magnetic poles. Geomagnetic field, the earth’s magnetic field also contains these lines. Solar winds can blow magnetic fields out of shape. Anything that has an electric current creates a magnetic field. These lines go from north to south![6]
Magnets are objects that have a larger magnetic force. It exists when electric charges move relative to other objects. However objects that are electrically insulated do not attract magnets in non extreme situations. The most dangerous magnet on earth is called a Neodymium Magnet; these are extremely powerful and super rare. When neodymium magnets are present in massive amounts they can smash a human hand to pieces if presented with the opportunity.
If an object is hard to “magnetize” then it holds the magnetic force for an extended amount of time verses an easier magnetically open object; that holds its magnetic charge for a shorter amount of time. The retentivity, or the power of or capacity for retaining the magnetic charge is dependent on how much work was required to align the domains.
The act of to objects repelling each other just enough to stay stationary over one another is called Magnetic Levitation. Electromagnets are required for this to work properly; these magnets are mostly cylindrically shaped.
Magnetic Levitation
when an object that is magnetized is lifted off the ground and the magnetism is produced by electrical currents. This first eliminates friction so that the train moves at incredible speeds from 310 miles per hour to higher speeds due to technology in the near future. Although it might be a kink to work out with creating all new types of engines for the Mag-Lev trains. Mag-Lev trains do not use an engine at all, do not require energy such as oil, natural gas, or coal, and do not touch the surface it floats on.[7]
The future of Magnetic Levitation is a bright one! It can be used to transport things into space or quickly around the world! In comparison to "normal cars" with wheels, Mag-Lev trains move at a faster pace and cost a significant amount of money less than those same "normal cars" and use less energy to operate; therefore overall better for the earth. Although their speeds are not super fast. the travel at about the same quickness as an airplane in the air. Ideas scientist have for this technology are moving huge amounts of water to different parts of the world who are experiencing extremely dry weather. The projected cost of a Mag-Lev train is around ten or eleven million dollars a mile.
1920's
2010
[[http://www.environmentalgraffiti.com/featured/car-air-magnets/2932|]]
Constructing a Magnetic Levitation car, train, van, bus, or brick for that matter can't be that difficult, right? Basically, all you need is a board and a couple of magnets. Of course, on a tiny, tiny scale. Energy is neither created nor destroyed according to the law of conservation of energy. A better word for what happens would be: transfer. When Magnetic Levitation is done, the energy that is “transferred” is recognized as sound.
Have you notice the plus and minus signs on the opposite ends of a battery? These become the North and South poles of an electromagnet!
should be considered a Father of Electromagnetism. He came up with the idea that Magnetism and electricity are somehow related. Soon after this realization the English book-binder wrote a review on the relationship between electricity and magnetism in 1821. Although the man had no grasp of mathematics he managed to invent the electric motor after figuring out that a suspended magnet revolved around a wire with a current flowing through it. Later, he was the first to create the Dynamo (which is an electric generator). He created the first Electric Induction in 1831. Devised laws of chemical deposition of metals from solutions in 1857, and also formulated the 2nd law of Electrolysis in 1845. But, his most important contribution was his development of the concept of a field to describe magnetic and electric forces. He discovered voltage could be changed and creating a law explaining the phenomenon.[8][9][10]
William Gilbert (1544-1603)
is the "father of electricity and magnetism". He used 17 years to try to figure out the amazing ways of magnetism and further his understanding of the compass. He discovered that it is easy to make magnets; simply by rubbing a metal together with a magnet. Using this same theory he learned how to make magnets stronger. In his many years he saw that magnets have a circular motion associated with them, this led to the basis of geomagnetism. Gilbert also published the book "De Magnete", this book destroyed many beliefs in science and made him a pioneer in how a magnet works. Above all, Gilbert was an inspiration to the great Galileo Galilei. [11]
Electromagnetism & Magnetism
One of the four fundamental forces in the universe is Magnetism . It is everywhere and in anything that has a movement of charged particles. For example, telephones, stereos, and televisions. What would society do without magnets? Not talk on the phone, listen to music, or watch TV! The charged particles are a result of electricity and even produce electricity. This is how Electricity and Magnetism are similar.[1]
Magnetism is defined as the attraction or repulsion of a ferromagnetic materials and a magnet. Ferromagnetic materials are Iron, Nickel, Cobalt, and alloys containing them. When a magnet comes in contact with a ferromagnetic material, the atoms become lined up. This results in a magnetic force between the ferromagnetic material and the magnet. This is all possible thanks to the magnetic field created by the movement of electrically charged particles.
Like it? Create your own at GoAnimate.com. It's free and fun!
Did you know a magnet is strongest at it’s north and south poles?
Magnets have two poles. These poles decide whether the ferromagnetic material is going to repel or attract. The attraction of two magnets will happen if the poles are opposite. For example, if the magnets are positive to positive they will repel; if they are negative to positive they attract and stick together.[2]
There are different types of magnets. They include:
Not only are there many types of magnets, there are many ways to use them as well! In many cases animals such as birds and sea turtles use the Earth’s magnetic field to navigate home, or away from home depending on the season. Some scientist say the mineral called Magnetite is used in the animals brains and help them find and use the magnetic field without problems. [4] [5]
Lines of flux are present in magnetic fields. The lines flow from one end of the object to another creating the North and South poles; similar to Earth's magnetic poles. Geomagnetic field, the earth’s magnetic field also contains these lines. Solar winds can blow magnetic fields out of shape. Anything that has an electric current creates a magnetic field. These lines go from north to south![6]
Magnets are objects that have a larger magnetic force. It exists when electric charges move relative to other objects. However objects that are electrically insulated do not attract magnets in non extreme situations. The most dangerous magnet on earth is called a Neodymium Magnet; these are extremely powerful and super rare. When neodymium magnets are present in massive amounts they can smash a human hand to pieces if presented with the opportunity.
If an object is hard to “magnetize” then it holds the magnetic force for an extended amount of time verses an easier magnetically open object; that holds its magnetic charge for a shorter amount of time. The retentivity, or the power of or capacity for retaining the magnetic charge is dependent on how much work was required to align the domains.
The act of to objects repelling each other just enough to stay stationary over one another is called Magnetic Levitation. Electromagnets are required for this to work properly; these magnets are mostly cylindrically shaped.
Magnetic Levitation
when an object that is magnetized is lifted off the ground and the magnetism is produced by electrical currents. This first eliminates friction so that the train moves at incredible speeds from 310 miles per hour to higher speeds due to technology in the near future. Although it might be a kink to work out with creating all new types of engines for the Mag-Lev trains. Mag-Lev trains do not use an engine at all, do not require energy such as oil, natural gas, or coal, and do not touch the surface it floats on.[7]
The future of Magnetic Levitation is a bright one! It can be used to transport things into space or quickly around the world! In comparison to "normal cars" with wheels, Mag-Lev trains move at a faster pace and cost a significant amount of money less than those same "normal cars" and use less energy to operate; therefore overall better for the earth. Although their speeds are not super fast. the travel at about the same quickness as an airplane in the air. Ideas scientist have for this technology are moving huge amounts of water to different parts of the world who are experiencing extremely dry weather. The projected cost of a Mag-Lev train is around ten or eleven million dollars a mile.
[[http://www.environmentalgraffiti.com/featured/car-air-magnets/2932|]]
Constructing a Magnetic Levitation car, train, van, bus, or brick for that matter can't be that difficult, right? Basically, all you need is a board and a couple of magnets. Of course, on a tiny, tiny scale.
Energy is neither created nor destroyed according to the law of conservation of energy. A better word for what happens would be: transfer. When Magnetic Levitation is done, the energy that is “transferred” is recognized as sound.
Have you notice the plus and minus signs on the opposite ends of a battery? These become the North and South poles of an electromagnet!
Michael Faraday(1791- 1867)
should be considered a Father of Electromagnetism. He came up with the idea that Magnetism and electricity are somehow related. Soon after this realization the English book-binder wrote a review on the relationship between electricity and magnetism in 1821. Although the man had no grasp of mathematics he managed to invent the electric motor after figuring out that a suspended magnet revolved around a wire with a current flowing through it. Later, he was the first to create the Dynamo (which is an electric generator). He created the first Electric Induction in 1831. Devised laws of chemical deposition of metals from solutions in 1857, and also formulated the 2nd law of Electrolysis in 1845. But, his most important contribution was his development of the concept of a field to describe magnetic and electric forces. He discovered voltage could be changed and creating a law explaining the phenomenon.[8] [9] [10]
William Gilbert (1544-1603)
is the "father of electricity and magnetism". He used 17 years to try to figure out the amazing ways of magnetism and further his understanding of the compass. He discovered that it is easy to make magnets; simply by rubbing a metal together with a magnet. Using this same theory he learned how to make magnets stronger. In his many years he saw that magnets have a circular motion associated with them, this led to the basis of geomagnetism. Gilbert also published the book "De Magnete", this book destroyed many beliefs in science and made him a pioneer in how a magnet works. Above all, Gilbert was an inspiration to the great Galileo Galilei. [11]
References